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Acquisitions, Divestitures, AHS Acquisitions, Divestitures, AHS (Schedule of Intangible Assets Acquired as Part of Business Combination) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 29, 2017
Jul. 30, 2016
Jul. 29, 2017
Jul. 30, 2016
May 27, 2016
Acquired Finite-Lived Intangible Assets [Line Items]          
Loss on sold and held for sale software product lines $ (24,315) $ 0 $ (24,315) $ 0  
Ruckus          
Acquired Finite-Lived Intangible Assets [Line Items]          
Identifiable intangible assets         $ 418,000
Ruckus | In Process Research and Development [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets         28,000
Ruckus | Trade names          
Acquired Finite-Lived Intangible Assets [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles         42,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   11 years      
Ruckus | Customer relationships          
Acquired Finite-Lived Intangible Assets [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles         118,000
Ruckus | Customer relationships | Minimum [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   1 year      
Ruckus | Customer relationships | Maximum [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   7 years      
Ruckus | Core/developed technology          
Acquired Finite-Lived Intangible Assets [Line Items]          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles         $ 230,000
Ruckus | Core/developed technology | Minimum [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   6 years      
Ruckus | Core/developed technology | Maximum [Member]          
Acquired Finite-Lived Intangible Assets [Line Items]          
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life   7 years